63199091 has 4 divisors (see below), whose sum is σ = 65378400. Its totient is φ = 61019784.

The previous prime is 63199069. The next prime is 63199099. The reversal of 63199091 is 19099136.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-63199091 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (63199099) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1089611 + ... + 1089668.

It is an arithmetic number, because the mean of its divisors is an integer number (16344600).

Almost surely, 2^63199091 is an apocalyptic number.

63199091 is a deficient number, since it is larger than the sum of its proper divisors (2179309).

63199091 is a wasteful number, since it uses less digits than its factorization.

63199091 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2179308.

The product of its (nonzero) digits is 13122, while the sum is 38.

The square root of 63199091 is about 7949.7855945931. The cubic root of 63199091 is about 398.3244305513.

The spelling of 63199091 in words is "sixty-three million, one hundred ninety-nine thousand, ninety-one".